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311 results on '"Vallely, Michael P."'

4. Diagnostic accuracy of transbronchial lung cryobiopsy for interstitial lung disease diagnosis (COLDICE): a prospective, comparative study

Author

Arnold, David, Cao, Christopher, Cashmore, Amy, Cleary, Shannon, Evans, Tiffany-Jane, French, Bruce, Geis, Monika, Glenn, Laura, Hibbert, Michael, Ing, Alvin, James, Allen, Meredith, Graham, Merry, Christopher, Pudipeddi, Anand, Saghaie, Tajalli, Thomas, Rajesh, Thomson, Claire, Twaddell, Scott, Troy, Lauren K, Grainge, Christopher, Corte, Tamera J, Williamson, Jonathan P, Vallely, Michael P, Cooper, Wendy A, Mahar, Annabelle, Myers, Jeffrey L, Lai, Simon, Mulyadi, Ellie, Torzillo, Paul J, Phillips, Martin J, Jo, Helen E, Webster, Susanne E, Lin, Qi T, Rhodes, Jessica E, Salamonsen, Matthew, Wrobel, Jeremy P, Harris, Benjamin, Don, Garrick, Wu, Peter J C, Ng, Benjamin J, Oldmeadow, Christopher, Raghu, Ganesh, and Lau, Edmund M T

Published
2020
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16. Triple Vessel Coronary Artery Disease Needs a Consistent Definition for Management Guidelines.

Author

Gupta, Aashray K., Paterson, Hugh S., He, Cheng, Vallely, Michael P., and Bennetts, Jayme S.

Subjects
CORONARY artery disease, CORONARY arteries, CORONARY artery bypass, BLOOD flow measurement, CORONARY artery stenosis
Abstract

For over forty years, coronary artery bypass grafting (CABG) has been recommended to patients with triple vessel disease (TVD) with the aim of providing a survival benefit compared to medical therapy. Generally, the survival benefit of CABG is determined by (a) the volume of myocardium at risk of infarction according to the extent of coronary artery disease (CAD), (b) the impairment of coronary flow reserve according to severity of coronary stenoses, severity of symptoms, or objective evidence of regional ischemia, and (c) the impairment of myocardial reserve according to left ventricular function and viability. The most frequently used index of survival benefit is the extent of CAD as described by the terms of the left main coronary stenosis and TVD. However, TVD has been inconsistently defined in randomised controlled trials. Furthermore, international guidelines do not provide a specific definition of TVD. This impacts a substantially sized and high-risk population. Here, we argue that the definition of TVD should include diseases in the major artery in each of the three coronary territories in order to estimate the survival benefit provided by CABG. [ABSTRACT FROM AUTHOR]

Published
2023
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24. Defining the Role of Anaortic Coronary Artery Bypass Grafting.

Author

Ramponi, Fabio, Seco, Michael, and Vallely, Michael P.

Subjects
CORONARY artery bypass, CORONARY artery surgery, CARDIOPULMONARY bypass, GASTRIC bypass, OPERATIVE surgery, CORONARY arteries, BLUNT trauma, MUCOCUTANEOUS lymph node syndrome
Abstract

As the population ages and co-morbidities become more prevalent, the complexity of patients presenting for coronary artery bypass surgery is increasing. Cardiopulmonary bypass and aortic cross-clamping in these patients carry increased risk and, indeed, in some patients, with ascending aortic disease, the risks are prohibitive. Total-arterial anaortic coronary artery surgery is a technique that provides complete surgical coronary artery revascularization without cardiopulmonary bypass and without manipulating the ascending aorta. The technique essentially eliminates the risk of cerebral embolization of aortic atheroma and aortic injury. Anaortic techniques are an essential skillset for coronary artery surgery centers treating higher-risk patients. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Minimally invasive off‐pump anaortic coronary artery bypass (MACAB).

Author

Mavioglu, Ilhan and Vallely, Michael P.

Subjects
*CORONARY artery bypass, *CORONARY artery surgery, *CARDIOPULMONARY bypass, *MINIMALLY invasive procedures, *ARTERIAL grafts, *STROKE
Abstract

Background: Minimally invasive direct coronary artery bypass has enabled coronary artery bypass graft to compete with the appeal of less invasive percutaneous coronary procedures. Favorable results of coronary artery bypass surgery performed without the use of cardiopulmonary bypass and without touching the aorta (anOPCAB) have enabled the development and use of minimally invasive methods. Methods: Between 2016 and 2021, 112 patients underwent multivessel coronary bypass surgery performed using a minimally invasive method through a small thoracotomy in the left chest with off‐pump, anaortic, and all‐arterial grafts (Minimally Invasive Off‐Pump Anaortic Coronary Artery Bypass [MACAB]). Patient data were collected and retrospectively analyzed. Eight series from the literature using the multivessel mini‐OPCAB and MACAB technique were also evaluated. Results: Collectively, from the literature, 2729 patients underwent an average of 2.4 bypasses with an early mortality rate of 0.7% and a stroke rate of 0.16%. In our MACAB case series, 112 patients underwent an average of 2.9 bypasses with a mortality rate of 1.8% and a stroke rate of 0%. Conclusion: MACAB can be performed safely by experienced surgeons and reduces neurological injury and surgical trauma and may be a good alternative for multivessel stenting. Simulation systems are essential for its dissemination, and teams dedicated to coronary surgery—with subspecialty expertise—are necessary to achieve good outcomes. [ABSTRACT FROM AUTHOR]

Published
2022
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31. Selecting the optimal treatment for left main coronary disease: The importance of identifying subgroups of patients.

Author

Seco, Michael, Paterson, Hugh S., Gaudino, Mario, and Vallely, Michael P.

Subjects
CORONARY disease, CORONARY artery stenosis, SURGICAL stents, CORONARY artery bypass, ENDARTERECTOMY, PERCUTANEOUS coronary intervention
Abstract

Randomized trials of stenting versus surgery for patients with unprotected left main (LM) coronary stenosis have largely shown similar survival between the two interventions. However, patients with LM stenosis represent a heterogeneous group in which subgroups likely to benefit from one therapy more than another are difficult to identify. Increasing coronary disease burden is the most accepted subgrouping for identifying optimal therapy but this can be defined in more detail allowing greater discrimination. Competitive flow reduces bypass graft patency in patients with isolated LM stenosis and complex bifurcation stenoses reduce the effectiveness of coronary stenting. The evidence for LM stenosis subgroupings is presented. [ABSTRACT FROM AUTHOR]

Published
2022
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32. Concomitant anaortic OPCAB and transfemoral TAVR for high-risk patients: A case series.

Author

Hardisky, Dariya, Vijayakumar, Ammu, Whitson, Bryan A., Lilly, Scott M., Boudoulas, K. Dean, Vallely, Michael P., and Boudoulas, Konstantinos Dean

Abstract

Background: Combined on-pump coronary artery bypass (ONCAB) and surgical aortic valve replacement (SAVR) is the treatment of choice for concomitant severe aortic stenosis and coronary artery disease not amenable to percutaneous coronary intervention. Extensive aortic calcification and atheromatous disease may prohibit cardiopulmonary bypass and aortic cross-clamping. In these cases, anaortic off-pump coronary artery bypass (OPCAB) is a Class I (EACTS 2018) and Class IIA (AHA 2021) indication for surgical coronary revascularization. Transcatheter aortic valve replacement (TAVR) has similar benefits when compared with SAVR for this population (Partner 2 & 3). Herewith we describe a case series of concomitant Anaortic OPCAB and TAVR via the transfemoral approach for patients with coronary artery and valve disease considered too high risk for traditional coronary artery bypass grafting and SAVR due to severe aortic disease.Methods/results: Eight patients underwent anaortic OPCAB and transfemoral TAVR during the same anesthetic in a hybrid operating room. Seven patients with multivessel disease had anaortic OPCAB via a sternotomy using composite grafts, one patient with LAD disease had anaortic OPCAB using a Da Vinci-assisted MIDCAB approach. All patients then had an Edwards Sapien 3 TAVR placed percutaneously via the common femoral artery. There was no 30 mortality or CVA in the series and all patients were discharged to home or a rehabilitation facility on Day 4-13.Conclusions: Combined anaortic OPCAB and transfemoral TAVR is a safe and feasible approach to treating concomitant extensive coronary artery disease and severe aortic stenosis. The aortic no-touch technique provides benefits in the elderly high-risk patients by reducing the risk of postoperative myocardial infarction and cerebrovascular stroke. [ABSTRACT FROM AUTHOR]

Published
2022
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33. Is the social origin pay gap bigger than we thought? Identifying and acknowledging workers with undefined social origins in survey data.

Author

Vallely, Michael, Findlay, Jeanette, and Hermannsson, Kristinn

Subjects
PROFESSIONAL identity, LABOR market, LABOR supply, JOB classification, NONRESPONSE (Statistics)
Abstract

This article investigates whether empirical studies have underestimated the social origin pay gap by omitting respondents with undefined social origins. Specifically, individuals that were not assigned a social origin because the identity of their parental household was unclear, nobody was earning in the household, or the occupational identity of the main wage earner could not be identified. Data from the UK Quarterly Labour Force Survey is analysed to establish the prevalence of undefined social origins and the extent to which the socioeconomic characteristics of these groups are different from those who can be identified using the Standard Occupational Classification (SOC). The results show that 10.5% of the working age population have undefined social origins and that the labour market outcomes of these people are worse than those with defined social origins. Results show that omitting these respondents underestimates the range of the social origin pay gap and the number of people affected. [ABSTRACT FROM AUTHOR]

Published
2024
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